Hello there,
I have completed many Scraping projects, all of them with free proxy-lists. A proxy provider could certainly be more stable and finish the scraping faster, but that would be for huge amounts of data, like millions. We can scrape the 100.000 entries of that ecommerce site gradually, if you still insist in getting dedicated proxies we can provide solutions. About Postgre DB, do you need that data to be imported inside a DB while the scrapper is running? Or would you rather me provide you with a CSV that you can later import in the DB?
Contact me,
MPA